In the picture, which Wilde shared today, the actress is on all fours with a very wide smile directed at her son Otis, who's clearly having a ball with his hands in the air and a huge smile to match his mom's. Next to the super-sweet snap, Wilde, who rarely posts pictures of her son, wrote: "My kind of party." What a fun way to spend a holiday that's all about laughter.

The last time the Meadowland actress shared a photo of Otis was this past August. In the picture, above, the future Mrs. Sudeikis's back is to the camera. She's holding her boy and his head leaning on her shoulder, eyes towards the lens, with the caption "Rock and roll, baby," narrating the scene.

These sneak peeks inside Wilde's personal life aren't the only indication that she's having the time of her life exploring parenthood with husband-to-be Sudeikis — the engaged celebrity has been very candid about her very lowkey home life and how she and Jason get a kick out of life's simple pleasures. "I just made risotto like 10 minutes ago. I like to cook, but I also have the easiest audience in the world," Wilde told People in February. "My fiancé [Jason Sudeikis] has no sense of smell — he was born without it — so he thinks everything I cook tastes amazing! It really builds my confidence."

As for Otis? During an appearance on Today in February the actress gushed that he is one talented tot, saying, "He's so smart and just plays his piano all day long. He's really musical so we're trying to encourage that."